Flexible pressure sensor

Abstract

The utility model relates to the technical field of sensors, and discloses a flexible pressure sensor, which comprises a first electrode layer, a second electrode layer, a pressure-sensitive layer and a control mainboard, and is characterized in that the first electrode layer, the pressure-sensitive layer and the second electrode layer are sequentially stacked; the first electrode layer comprises a first substrate and a plurality of first electrodes arranged on the first substrate at intervals, the second electrode layer comprises a second substrate and a plurality of second electrodes arranged on the second substrate at intervals, and the extension direction of the second electrodes intersects with the extension direction of the first electrodes; the first electrode and the second electrode are respectively connected with two surfaces of the pressure-sensitive layer and are electrically connected with the pressure-sensitive layer and the control mainboard; the pressure-sensitive layer is used for generating electric signals, the first electrode and the second electrode are used for transmitting the electric signals, and the control mainboard is used for receiving the electric signals; the first base body, the second base body and the pressure sensitive layer are made of cloth. The utility model aims to solve the technical problems that a flexible pressure sensor is poor in flexibility, is not resistant to bending, and is easy to generate loud noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field especially relates to a flexible pressure sensor. BACKGROUND

[0002] The flexible pressure sensor is a flexible electronic component that can sense the size of the pressure applied to its surface, and is widely used in medical beds, floor cleaning robots and electronic drums and other electronic products. By sensing the size of the external pressing, impact or knocking force, the collected pressure data can be used for secondary development of electronic products, and can also be used on mechanical arms or industrial robots and their end effectors, as well as in the field of intelligent sports equipment such as mobile robots, leg-foot robots, anti-collision walls, musical instrument pedals, intelligent boxing gloves and human intelligent boxing targets.

[0003] In related technologies, the flexible pressure sensor is applied to a bed to monitor physiological indicators of the human body in real time, optimize sleep quality and prevent pressure sores. However, due to the poor softness of the flexible pressure sensor, it is not resistant to bending, generates a large noise when subjected to external force, and after being bent several times, it may cause wire breakage or wire twisting, resulting in poor user experience. SUMMARY

[0004] The utility model aims at providing a flexible pressure sensor to solve the technical problem of poor softness of the flexible pressure sensor, not resistant to bending and easy to generate a large noise.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a flexible pressure sensor, which comprises a first electrode layer, a second electrode layer, a pressure sensing layer and a control mainboard, the first electrode layer, the pressure sensing layer and the second electrode layer are sequentially stacked;

[0006] The first electrode layer comprises a first base body and a plurality of first electrodes arranged at intervals on the first base body, the second electrode layer comprises a second base body and a plurality of second electrodes arranged at intervals on the second base body, and the extension direction of the second electrode intersects with the extension direction of the first electrode;

[0007] The first electrode and the second electrode are respectively connected to two sides of the pressure sensing layer, and are electrically connected with the pressure sensing layer and the control mainboard; the pressure sensing layer is used for generating an electric signal, the first electrode and the second electrode are used for transmitting the electric signal, and the control mainboard is used for receiving the electric signal;

[0008] Among them, the material of the first base body, the second base body and the pressure sensing layer is cloth.

[0009] Optionally, the first electrode and the first base body are integrally formed, and the second electrode and the second base body are integrally formed.

[0010] Optionally, the first electrode is arranged in the first substrate, and the second electrode is arranged in the second substrate.

[0011] Optionally, the flexible pressure sensor further comprises a wire layer, the first electrode and the control mainboard are electrically connected through the wire layer, and the second electrode and the control mainboard are electrically connected through the wire layer.

[0012] Optionally, the wire layer comprises a third substrate and a plurality of conductive wires arranged in the third substrate in a spaced manner, and the conductive wires are arranged in the third substrate in a penetrating manner.

[0013] The first electrode and the control mainboard are electrically connected through the conductive wires, and the second electrode and the control mainboard are electrically connected through the conductive wires.

[0014] Optionally, the third substrate is made of cloth.

[0015] Optionally, the flexible pressure sensor further comprises conductive foam, the first electrode and the conductive wires are fixed and electrically connected through the conductive foam, and / or the second electrode and the conductive wires are fixed and electrically connected through the conductive foam.

[0016] Optionally, the flexible pressure sensor further comprises a reinforcing connecting piece, the reinforcing connecting piece is fixedly connected to one side of the wire layer away from the conductive foam, and the reinforcing connecting piece is used for reinforcing the connection strength between the conductive foam and the conductive wires.

[0017] Optionally, the first substrate and the second substrate are provided with conductive wires arranged in a penetrating manner.

[0018] The first electrode and the control mainboard are electrically connected through the conductive wires, and the second electrode and the control mainboard are electrically connected through the conductive wires.

[0019] Optionally, the flexible pressure sensor further comprises a first insulation layer and a second insulation layer, the first insulation layer is attached to one side of the first electrode layer away from the pressure sensing layer, and the second insulation layer is attached to one side of the second electrode layer away from the pressure sensing layer.

[0020] Optionally, the first insulation layer and the second insulation layer are made of cloth.

[0021] Optionally, the flexible pressure sensor further comprises a data line, one end of the data line is connected to the control mainboard, and the other end of the data line is connected to a plug-in port.

[0022] The flexible pressure sensor has the advantages that:

[0023] This utility model discloses a flexible pressure sensor comprising a first electrode layer, a second electrode layer, a pressure-sensitive layer, and a control mainboard, wherein the first electrode layer, the pressure-sensitive layer, and the second electrode layer are sequentially stacked. The first and second substrates are made of soft fabric, with the first and second electrodes respectively positioned on the fabric substrate to form the first electrode layer and the second electrode layer. The pressure-sensitive layer is a fabric structure woven from carbon fiber or other high-resistance conductive materials. The first and second electrode layers are respectively attached to the front and back sides of the pressure-sensitive layer. Utilizing the softness and bending resistance of the fabric, the flexibility and bending resistance of the flexible pressure sensor are improved, making it less prone to noise when applied to a bed. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the flexible pressure sensor provided in an embodiment of the present invention;

[0026] Figure 2 An exploded view of the flexible pressure sensor provided in this embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the first electrode layer provided in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the second electrode layer provided in an embodiment of the present invention;

[0029] Figure 5 Another exploded view of the flexible pressure sensor provided in this embodiment of the utility model;

[0030] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle;

[0031] Figure 7 for Figure 5 A magnified view of a portion of point B in the middle.

[0032] The markings in the image are as follows:

[0033] 10, first electrode layer; 11, first base; 12, first electrode; 20, second electrode layer; 21, second base; 22, second electrode; 30, pressure-sensitive layer; 40, control mainboard; 50, outgoing line layer; 60, conductive foam; 70, reinforcing connecting piece; 81, first isolation layer; 82, second isolation layer; 90, protective layer; 100, flexible pressure sensor; 101, data line; 102, plug-in port; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0035] In the description of the present application, it should be explained that the positions or location relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer" and the like in the present application are based on the position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices and elements indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information.

[0037] As shown in Figures 1 to 4 The embodiment of the present application provides a flexible pressure sensor 100, which comprises a first electrode layer 10, a second electrode layer 20, a pressure-sensitive layer 30 and a control mainboard 40, the first electrode layer 10, the pressure-sensitive layer 30 and the second electrode layer 20 are sequentially stacked; the first electrode layer 10 comprises a first base 11 and a plurality of first electrodes 12 arranged at intervals on the first base 11, the second electrode layer 20 comprises a second base 21 and a plurality of second electrodes 22 arranged at intervals on the second base 21, and the extension direction of the second electrode 22 intersects with the extension direction of the first electrode 12; the first electrode 12 and the second electrode 22 are respectively connected to two sides of the pressure-sensitive layer 30, and are electrically connected with the pressure-sensitive layer 30 and the control mainboard 40; the pressure-sensitive layer 30 is used for generating an electric signal, the first electrode 12 and the second electrode 22 are used for transmitting the electric signal, and the control mainboard 40 is used for receiving the electric signal; wherein the material of the first base 11, the second base 21 and the pressure-sensitive layer 30 is cloth.

[0038] Based on the above technical solution, the first substrate 11 and the second substrate 21 are made of soft fabric, and the first electrode 12 and the second electrode 22 are respectively set on the fabric as a base, thereby forming the first electrode layer 10 and the second electrode layer 20. The pressure-sensitive layer 30 is a fabric structure woven from carbon fiber or other high-resistance conductive materials. In this embodiment, the first electrode layer 10 and the second electrode layer 20 are respectively attached to the front and back sides of the pressure-sensitive layer 30. By utilizing the softness and bending resistance of the fabric, the flexibility of the flexible pressure sensor 100 is improved, and the bending resistance of the sensor is enhanced. After the sensor is squeezed, deformed, and bent, it is not easy for wires to break or short circuit. When the flexible pressure sensor 100 is applied to a bed, the user directly contacts the fabric, which is less likely to generate noise.

[0039] In this embodiment, the extension direction of the second electrode 22 intersects the extension direction of the first electrode 12. The first electrode 12 and the second electrode 22 cover most of the surface of the pressure-sensitive layer 30, increasing the intersection points between the first electrode 12 and the second electrode 22, thereby increasing the pressure-sensitive points of the pressure-sensitive layer 30 to detect pressure and improving the accuracy of pressure detection.

[0040] The first electrode 12 and the second electrode 22 are made of conductive fibers. The conductor is one or more of conductive wire, knitted yarn, conductive yarn, conductive copper foil, or conductive tape. It can be tightly bonded to the fabric substrate by weaving, coating, or weaving to improve the overall flexibility of the electrode layer. In this embodiment, the fabric can be one or more of natural fabric, chemical fabric, cotton fabric, or polyester.

[0041] For example, a flexible pressure sensor 100 is laid on the surface of a mattress. When a user's body is in contact with the mattress and applies pressure, the pressure-sensitive points of the pressure-sensitive layer 30 are deformed by external force or load. The change in the contact area between the pressure-sensitive layer 30 and the first electrode 12 and the second electrode 22 causes a change in the resistance value of the pressure-sensitive layer 30. The change in resistance value is converted into an electrical signal and transmitted to the control motherboard 40 through the first electrode 12 or the second electrode 22. The control motherboard 40 then transmits the processed electrical signal to an external terminal device.

[0042] In some embodiments, such as Figures 3 to 5 As shown, the extension direction of the second electrode 22 is perpendicular to the extension direction of the first electrode 12.

[0043] Specifically, on the same plane, the flexible pressure sensor 100 has a first direction X and a second direction Y that are perpendicular to each other. A plurality of first electrodes 12 extend along the first direction X and are spaced apart on the first substrate 11, and second electrodes 22 extend along the second direction Y and are spaced apart on the second substrate 21.

[0044] Exemplarily, the first electrode layer 10, the second electrode layer 20 and the pressure sensing layer 30 are rectangular in shape, so that the flexible pressure sensor 100 forms a rectangular cloth structure, the length direction of which is the second direction Y and the width direction of which is the first direction X. Of course, the flexible pressure sensor 100 is not limited to a rectangular shape, but can also be of other shapes, which are specifically designed according to application scenarios.

[0045] In some embodiments, the first electrode 12 is integrally formed with the first substrate 11, and the second electrode 22 is integrally formed with the second substrate 21.

[0046] Specifically, the first electrode 12 and the second electrode 22 are conductive fibers, the first electrode 12 is formed on the first substrate 11 by a textile process, and the second electrode 22 is formed on the second substrate 21 by a textile process, so as to form a conductive fabric of cloth material, which can be deformed, folded or bent under the action of an external force.

[0047] In some embodiments, the first electrode 12 is arranged in the first substrate 11, and the second electrode 22 is arranged in the second substrate 21.

[0048] Specifically, the first electrode 12 is arranged in the first substrate 11 by embroidery or knitting, so as to form a first electrode layer 10 of cloth material, and the second electrode 22 is arranged in the second substrate 21 by embroidery or knitting, so as to form a second electrode layer 20 of cloth material.

[0049] In the present embodiment, the embroidery or knitting can be performed by a machine or by hand, and the process is relatively simple, which can reduce the manufacturing cost.

[0050] In some embodiments, as shown in Figures 3 to 5 The flexible pressure sensor 100 further includes a wire outlet layer 50, the first electrode 12 and the control mainboard 40 are electrically connected through the wire outlet layer 50, and the second electrode 22 and the control mainboard 40 are electrically connected through the wire outlet layer 50, and the wire outlet layer 50 can be deformed under the action of an external force.

[0051] In actual applications, the first electrode 12 is arranged on the side of the first substrate 11 facing the pressure sensing layer 30, and the second electrode 22 is arranged on the side of the second substrate 21 facing the pressure sensing layer 30. In order to make the first electrode 12 and the second electrode 22 cover most of the surface of the pressure sensing layer 30, the area of the first electrode layer 10 and the second electrode layer 20 is usually designed to be larger than the area of the pressure sensing layer 30.

[0052] In the embodiment, in the first direction X, the first base body 11 is folded over at the edge portion larger than the pressure sensing layer 30 towards the side away from the pressure sensing layer 30, and is fixed by stitching thread at the side away from the pressure sensing layer 30 of the first base body 11, the first electrode 12 of the folded portion is electrically connected with the wire-out layer 50, and the first electrode 12 transmits the electrical signal from the wire-out layer 50 to the control mainboard 40. In the second direction Y, the second base body 21 is folded over at the edge portion larger than the pressure sensing layer 30 towards the side away from the pressure sensing layer 30, and is fixed by stitching thread at the side away from the pressure sensing layer 30 of the second base body 21, the second electrode 22 of the folded portion is electrically connected with the wire-out layer 50, and the second electrode 22 transmits the electrical signal from the wire-out layer 50 to the control mainboard 40.

[0053] In the above embodiment, the first electrode layer 10 and the second electrode layer 20 are folded over to make the projection area of the first electrode layer 10 and the second electrode layer 20 on the pressure sensing layer 30 equal to or slightly larger than the area of the pressure sensing layer 30, so that the flexible pressure sensor 100 is aligned with the edge of the cloth. Since the wire-out layer 50 can be deformed under external force and has a certain flexibility, the softness of the flexible pressure sensor 100 is not affected.

[0054] In some embodiments, the wire-out layer 50 includes a third base body and a plurality of conductive wires arranged at intervals on the third base body (not shown in the drawings), and the conductive wires are arranged in the third base body; the first electrode 12 and the control mainboard 40 and the second electrode 22 and the control mainboard 40 are electrically connected by the conductive wires; wherein the third base body is made of cloth.

[0055] Specifically, the third base body takes cloth as the base, and the conductive wires are arranged in the third base body by embroidery or knitting, forming the wire-out layer 50 made of cloth, which improves the flexibility of the flexible pressure sensor 100 and reduces noise during use.

[0056] The conductive wire can be a metal wire, such as a copper wire or a silver wire, and has conductivity and tensile strength. The conductive wire is embroidered on the third base body and can deform with the deformation of the third base body while maintaining its conductivity.

[0057] In the embodiment, a plurality of conductive wires arranged at intervals are arranged on the third base body, and each conductive wire is connected to each first electrode 12 (or second electrode 22) one by one. Specifically, in the wire-out layer 50 connected to the first electrode 12, the conductive wire extends along the first direction X and is connected to the first electrode 12 one by one; in the wire-out layer 50 connected to the second electrode 22, the conductive wire extends along the second direction Y and is connected to the second electrode 22 one by one.

[0058] In some embodiments, as shown in FIG. 6, the wire-out layer 50 includes a third base body and a plurality of conductive wires arranged at intervals on the third base body (not shown in the drawings), and the conductive wires are arranged in the third base body; the first electrode 12 and the control mainboard 40 and the second electrode 22 and the control mainboard 40 are electrically connected by the conductive wires; wherein the third base body is made of cloth. Figure 5As shown, the flexible pressure sensor 100 further comprises a protective layer 90, which is attached to the side of the lead-out layer 50 away from the first electrode 12 or the side of the lead-out layer 50 away from the second electrode 22.

[0059] Specifically, after the first electrode layer 10 and the second electrode layer 20 are folded, in order to avoid direct contact between the human skin and the first electrode 12 or the second electrode 22, the protective layer 90 is connected to the folded side of the first electrode layer 10 and the second electrode layer 20 by a sewing thread, and the material of the protective layer 90 is cloth. The protective layer 90 can cover the first electrode 12 or the second electrode 22 of the folded part.

[0060] In some embodiments, as shown in FIG. 1, the flexible pressure sensor 100 further comprises a conductive foam 60, and the first electrode 12 and the conductive wire are fixed and electrically connected by the conductive foam 60; and the second electrode 22 and the conductive wire are fixed and electrically connected by the conductive foam 60. Figures 5 to 7

[0061] Specifically, the conductive foam 60 is a conductive cloth wrapped on a fireproof sponge, or a sponge material with conductive performance composed of a sponge base material and a conductive particle or coating. Since the diameter of the conductive wire is small and the thickness is thin, the contact with the first electrode 12 and the second electrode 22 is unstable. In this embodiment, the conductive wire and the first electrode 12 are fixed and connected on the conductive foam 60 by a sewing thread, so that the first electrode 12 is electrically connected with the conductive wire. For the same purpose, the second electrode 22 and the conductive wire are fixed and connected on the conductive foam 60 by a sewing thread, so that the first electrode 12 is electrically connected with the conductive wire.

[0062] In this embodiment, the conductive foam 60 is fixed and connected to the first electrode 12 and the second electrode 22, indirectly enlarges the contact area of the conductive wire with the first electrode 12 and the second electrode 22, and makes the contact of the first electrode 12 or the second electrode 22 with the conductive wire more stable, and the connection is stable and reliable.

[0063] In other embodiments, the conductive foam 60 can be replaced by conductive glue, conductive rubber block or conductive cloth, etc., as long as it has conductive performance and soft characteristics.

[0064] In some embodiments, as shown in FIG. 1, the flexible pressure sensor 100 further comprises a reinforcing connecting piece 70, which is fixed and connected to the side of the lead-out layer 50 away from the conductive foam 60, for reinforcing the connection strength between the conductive foam 60 and the conductive wire. Figure 5

[0065] ​​Specifically, the structural strength of the reinforcing connecting piece 70 is greater than that of the conductive foam 60. The reinforcing connecting piece 70 is fixedly connected to the side of the lead-out layer 50 away from the conductive foam 60, thereby strengthening the connection between the conductive foam 60 and the conductive wire and the electrode, improving the contact stability between the first electrode 12 or the second electrode 22 and the conductive wire, and preventing the conductive wire from breaking.

[0066] In some embodiments, the reinforcing connecting piece 70 is a PET film, which is a film material made from polyethylene terephthalate. The thickness of the reinforcing connecting piece 70 is 0.1-0.2 mm. Within this thickness range, it can enhance the connection strength between the conductive foam 60 and the conductive wire without significantly increasing the overall thickness of the flexible pressure sensor 100.

[0067] For example, the thickness of the reinforcing connecting piece 70 is 0.125 mm.

[0068] In some embodiments, the first electrode 12 is inserted into the first substrate 11, and the second electrode 22 is inserted into the second substrate 21; conductive wires are inserted into the first substrate 11 and the second substrate 21; the first electrode 12 and the control main board 40 and the second electrode 22 and the control main board 40 are electrically connected by conductive wires (not shown in the figures).

[0069] In this embodiment, the first substrate 11 is based on fabric, and the first electrode 12 and conductive wires are interwoven and disposed on the first substrate 11 by embroidery or knitting. There is no need to set a separate lead-out layer 50. It is equivalent to directly molding the lead-out layer 50 and the first electrode layer 10 onto the fabric. Similarly, the second substrate 21 is based on fabric, and the second electrode 22 and conductive wires are interwoven and disposed on the second substrate 21 by embroidery or knitting. There is no need to set a lead-out layer 50. The lead-out layer 50 and the second electrode layer 20 are directly molded onto the fabric, thereby forming a flexible pressure sensor 100 made of fabric material, improving the flexibility of the sensor.

[0070] In some embodiments, such as Figure 1 and Figure 2 As shown, the flexible pressure sensor 100 also includes a first insulating layer 81 and a second insulating layer 82. The first insulating layer 81 is attached to the side of the first electrode layer 10 away from the pressure-sensitive layer 30, and the second insulating layer 82 is attached to the side of the second electrode layer 20 away from the pressure-sensitive layer 30. The first insulating layer 81 and the second insulating layer 82 are made of fabric.

[0071] Specifically, the first isolation layer 81 can be fixed to the side of the first electrode layer 10 away from the pressure sensing layer 30 by sewing thread, and the second isolation layer 82 can be fixed to the side of the second electrode layer 20 away from the pressure sensing layer 30 by sewing thread, and the first isolation layer 81 and the second isolation layer 82 respectively provide protection for the first electrode layer 10 and the second electrode layer 20, prevent the first electrode layer 10 and the second electrode layer 20 from being exposed to the external environment, reduce the damage of the electrodes due to friction, scratching or other factors, and prolong the service life of the flexible pressure sensor 100.

[0072] In this embodiment, the first isolation layer 81 and the second isolation layer 82 are made of cloth material and have a certain flexibility, which can better adapt to deformation when subjected to external force, and can increase the comfort of the user, reduce the friction and discomfort between the flexible pressure sensor 100 and the skin, and improve the user experience.

[0073] In some embodiments, as shown in Figure 1 and Figure 2 The flexible pressure sensor 100 further comprises a data line 101, one end of the data line 101 is connected to the control mainboard 40, and the other end of the data line 101 is connected to a plug-in port 102.

[0074] Specifically, the data line 101 is used to transmit the electrical signal received by the control mainboard 40 to external devices in real time and quickly through the plug-in port 102, so as to monitor and analyze the pressure change. Among them, the plug-in port 102 can be connected to various types of external devices, such as computers, data collectors, displays, etc., enhancing the scalability of the system, so that the flexible pressure sensor 100 can be applied to different application scenarios and needs.

[0075] It should be understood that the term "and / or" used in the utility model specification and the appended claims means any combination of one or more of the associated listed terms and all possible combinations, and includes these combinations. It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or system. Without more limitations, the element defined by the statement "including a…" does not exclude the presence of other identical elements in the process, method, article or system including the element.

[0076] The above-mentioned embodiment serial numbers of the utility model only for description, not represent the pros and cons of the embodiment. The above-mentioned, only for the specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the utility model disclosed in the technical range, can easily think of various equivalent modifications or replacements, these modifications or replacements should be covered in the protection scope of the utility model.

Claims

1. A flexible pressure sensor, characterized by, The flexible pressure sensor comprises a first electrode layer, a second electrode layer, a pressure sensing layer and a control mainboard, the first electrode layer, the pressure sensing layer and the second electrode layer are sequentially stacked; The first electrode layer comprises a first base and a plurality of first electrodes arranged at intervals on the first base, the second electrode layer comprises a second base and a plurality of second electrodes arranged at intervals on the second base, and the extending direction of the second electrodes is crossed with the extending direction of the first electrodes; The first electrode and the second electrode are respectively connected to two sides of the pressure sensing layer, and are electrically connected with the pressure sensing layer and the control mainboard; the pressure sensing layer is used for generating an electric signal, the first electrode and the second electrode are used for transmitting the electric signal, and the control mainboard is used for receiving the electric signal; The material of the first base, the second base and the pressure sensing layer is cloth.

2. The flexible pressure sensor of claim 1, wherein, The first electrode and the first base are integrally formed, and the second electrode and the second base are integrally formed.

3. The flexible pressure sensor of claim 1, wherein, The first electrode is arranged in the first base, and the second electrode is arranged in the second base.

4. The flexible pressure sensor of claim 2, wherein, The flexible pressure sensor further comprises a wire layer, the first electrode and the control mainboard are electrically connected through the wire layer, and the second electrode and the control mainboard are electrically connected through the wire layer; the wire layer can be deformed under external force.

5. The flexible pressure sensor of claim 4, wherein, The wire layer comprises a third base and a plurality of conductive wires arranged at intervals on the third base, and the conductive wires are arranged in the third base; The first electrode and the control mainboard are electrically connected through the conductive wires, and the second electrode and the control mainboard are electrically connected through the conductive wires; The material of the third base is cloth.

6. The flexible pressure sensor of claim 5, wherein, The flexible pressure sensor further comprises conductive foam, the first electrode and the conductive wires are fixed and electrically connected through the conductive foam, and / or the second electrode and the conductive wires are fixed and electrically connected through the conductive foam.

7. The flexible pressure sensor of claim 6, wherein, The flexible pressure sensor further comprises a reinforcing connecting piece, the reinforcing connecting piece is fixedly connected to one side of the wire layer away from the conductive foam, and the reinforcing connecting piece is used for strengthening the connection strength between the conductive foam and the conductive wires.

8. The flexible pressure sensor of claim 3, wherein, The first base and the second base are provided with conductive wires; The first electrode and the control mainboard are electrically connected through the conductive wires, and the second electrode and the control mainboard are electrically connected through the conductive wires.

9. The flexible pressure sensor of claim 1, wherein, The flexible pressure sensor further comprises a first insulation layer and a second insulation layer, the first insulation layer is attached to one side of the first electrode layer away from the pressure sensing layer, and the second insulation layer is attached to one side of the second electrode layer away from the pressure sensing layer; The material of the first insulation layer and the second insulation layer is cloth.

10. The flexible pressure sensor of any one of claims 1 to 9, wherein, The flexible pressure sensor further comprises a data line, one end of the data line is connected to the control mainboard, and the other end of the data line is connected with a plug-in port.

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